I bought these Baby Formula Dispensing Scoops... https://www.amazon.com/dp/B09KJN9HKX?ref=ppx_pop_mob_ap_share

Hi! Great question. Our team has thought long and hard about this, and we think the best option would be to make a 3oz bottle and save the extra in the refrigerator. Due to the size of our scoop, it’s tricky to make sure baby will get the exact ratios (and nutrition!) if you try to do a 2 1/2 oz bottle. Let us know if you have any other questions!